The antonyms for the phrase "acted correctly" are numerous and varied. Some of the most common antonyms include "acted wrongly," "acted incorrectly," "acted improperly," "acted unethically," and "acted illegally." These words can describe actions that are immoral, against the law, or simply not in line with accepted social or professional standards. Other antonyms for "acted correctly" might include "acted irresponsibly," "acted recklessly," or "acted with malice." Whatever the antonym, it refers to an action that is not aligned with what is expected or acceptable in a given situation, and generally implies a negative or undesirable outcome.